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Finding the Fourth Proportional to 1,196,987, 1,651,876.64 and 660,477.56

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Solution

The fourth proportional to 1,196,987, 1,651,876.64 and 660,477.56 is: 911,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196,987 : 1,651,876.64 = 660,477.56 : x
  2. Step 2: Convert to fraction form
    1,196,987/1,651,876.64 = 660,477.56/x
  3. Step 3: Cross multiply
    1,196,987x = 1,651,876.64 × 660,477.56
  4. Step 4: Simplify right side
    1,196,987x = 1,091,027,452,608.20
  5. Step 5: Solve for x
    x = 1,091,027,452,608.20/1,196,987
  6. Step 6: Final answer
    x = 911,478.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.